Eryngium yuccifolium - Rattlesnake Master

Easily grown in average, dry to medium, well-drained soils in full sun. Prefers dryish, sandy soils. Self-seeds in optimum growing conditions. Plants tend to open up and sprawl if grown in overly fertile soils or in anything less than full sun. This is a taprooted plant which transplants poorly and is best left undisturbed once established.